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Integral Linearity of ADS1210

Daniel Shi
Prodigy 10 points

Hi all,

I want use ADS1210 in a pressure transducer.

And I want to confirm it's performance, but I'm confused anout  ' Integral Linearity fDATA = 60Hz ±0.0015 %FSR' .

How to get this parameter and the graph about LINEARITY vs TEMPERATURE ?

Thanks!

  • 0
    TI__Expert 6925 points

    Hello Daniel,

    As you could see, the datasheet provides two integral nonlinearity values:

    1) The first one which is in the specs table and expressed as ±0.0015% or 15ppm. This represents the maximum linearity error that any part can ever experience. For example, if the input range is 10V (-5V to +5V), the maximum linearity error that you can ever have in all parts is:

    ±(0.000015)*10V = ±150uV


    2) The second one which is depicted in the typical performance curves as ±6ppm maximum from -40°C to +80°C. This represents the typical linearity error that is expected on most parts, but not all of them. For example, if the input range is 10V (-5V to +5V),  most parts are expected to have a maximum linearity error of about:  

    ±(0.000006)*10V = ±60uV

     

    Regards,